Stokes number

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Science and technology

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What Wikipedia says

The Stokes number (Stk), named after George Gabriel Stokes, is a dimensionless number characterising the behavior of particles suspended in a fluid flow. The Stokes number is defined as the ratio of the characteristic time of a particle (or droplet) to a characteristic time of the flow or of an obstacle, or

Excerpt from the Wikipedia article “Stokes number”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Richard Sear, CC BY-SA 4.0, via Wikimedia Commons.